CN112517706B - Stamping assembly, die and three-dimensional aluminum profile forming method - Google Patents
Stamping assembly, die and three-dimensional aluminum profile forming method Download PDFInfo
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- CN112517706B CN112517706B CN202011086290.8A CN202011086290A CN112517706B CN 112517706 B CN112517706 B CN 112517706B CN 202011086290 A CN202011086290 A CN 202011086290A CN 112517706 B CN112517706 B CN 112517706B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a stamping assembly, a die and a three-dimensional aluminum profile forming method, belongs to the technical field of three-dimensional aluminum profile forming, and solves the technical problem that the existing three-dimensional aluminum profile is difficult to form. The stamping assembly comprises an upper punch, an upper cavity surrounded by a first wall and a second wall is arranged on the upper punch, and the first wall and the second wall are matched with two intersected outer side walls of the three-dimensional aluminum profile; the lower die cavity is formed by a third wall and a fourth wall, and the third wall and the fourth wall are matched with the other two intersected outer side walls of the three-dimensional aluminum profile; the upper cavity and the lower cavity are butted to form a cavity; the die comprises an upper die, a lower die and a stamping assembly, wherein an upper punch is arranged on the upper die, and a lower punch is arranged on the lower die; the molding method comprises the following steps of 1: clamping the aluminum profile blank by using a clamp; step 2: and driving the upper die and the lower die to be closed so as to drive the upper punch and the lower punch to perform opposite punching and press the aluminum profile blank into the die cavity. Therefore, the production of the three-dimensional aluminum profile is simpler and more convenient, and the cost is lower.
Description
Technical Field
The invention belongs to the technical field of three-dimensional aluminum profile forming, and particularly relates to a stamping assembly, a die and a three-dimensional aluminum profile forming method.
Background
The lightweight car body is made of light alloy, the most widely applied car body is aluminum alloy at present, a car body framework is generally made of aluminum profiles, the forming process of the aluminum profiles mainly comprises bending and stretch bending, and generally, the light weight car body can be realized by directly stamping a simple aluminum profile structure through a die; for the aluminum profile with a complex structure, particularly for a three-dimensional distortion part, a stretch bending process is adopted; because the aluminium alloy material is softer, for reinforcing aluminium alloy structural strength, the aluminium alloy is mostly special-shaped section structure, because special-shaped section structure can not adopt the ball as the plug, so hardly realize through the numerical control bending machine.
In the prior art, a three-dimensional bending structure of an aluminum profile is usually realized through a stretch bending process, namely, two ends of the aluminum profile are clamped by corresponding clamping heads, and the corresponding bending deformation or distortion deformation of the aluminum profile is realized through the stretch bending process, so that the final shape of an aluminum profile design piece is realized. The three-dimensional stretch bending needs to determine the motion trail of the end chuck of the aluminum profile, the motion trail directly influences the quality of a product, the motion trail is a space curve and is difficult to determine in advance, and although the motion trail can be obtained through a test method, the cost and the period are greatly increased.
Therefore, the three-dimensional aluminum profile is very difficult to form.
Disclosure of Invention
The invention provides a stamping assembly, a die and a three-dimensional aluminum profile forming method, which are used for solving the technical problem that the three-dimensional aluminum profile forming difficulty is high in the prior art.
The invention is realized by the following technical scheme: a stamping assembly for stamping three-dimensional aluminum profiles, comprising:
the upper punch is provided with an upper cavity formed by intersecting a first wall and a second wall, and the first wall and the second wall are matched with two intersected outer side walls of the three-dimensional aluminum profile;
the lower die cavity is formed by intersecting a third wall and a fourth wall, and the third wall and the fourth wall are matched with the other two intersected outer side walls of the three-dimensional aluminum profile;
the upper die cavity and the lower die cavity are spliced to form a die cavity, and the shape and the size of the die cavity are matched with those of the three-dimensional aluminum profile.
Further, in order to better implement the invention, the first wall is matched with the top wall of the three-dimensional aluminum profile;
the second wall is matched with the rear side wall of the three-dimensional aluminum profile;
the third wall is matched with the bottom wall of the three-dimensional aluminum profile;
the fourth wall is matched with the front side wall of the three-dimensional aluminum profile.
The die provided by the invention comprises an upper die, a lower die and the stamping assembly, wherein the upper punch is arranged on the upper die, and the lower punch is arranged on the lower die.
The invention provides a three-dimensional aluminum profile forming method, which is applied to the die and comprises the following steps:
step 1: clamping the aluminum profile blank by using a clamp;
step 2: driving the upper die and the lower die to be matched so as to drive the upper punch and the lower punch to carry out opposite punching and press the aluminum profile blank into the cavity so as to punch the aluminum profile blank;
and step 3: and opening the die after the stamping is finished to obtain the three-dimensional aluminum profile.
Further, in order to better implement the present invention, the manufacturing method of the upper punch and the lower punch includes the steps of:
step S1: extracting an envelope surface enveloping the outer side wall of the three-dimensional aluminum profile by using three-dimensional software, and dividing the extracted envelope surface into a first surface group and a second surface group which are intersected;
step S2: arranging the first face groups on an upper punch model by using three-dimensional software, enabling the first face groups to surround the upper cavity, and arranging the second face groups on a lower punch model, enabling the second face groups to surround the lower cavity;
step S3: the upper punch is machined according to the upper punch pattern and the lower punch is machined according to the lower punch pattern.
Further, in order to better implement the present invention, the method of processing the upper punch and the lower punch in step S3 is 3D injection molding.
Further, in order to better implement the invention, the clamp comprises a first clamp and a second clamp, and the first clamp and the second clamp respectively clamp the left end and the right end of the aluminum profile blank.
Further, in order to better implement the present invention, in the step 2, the opposite punching direction of the upper punch and the lower punch is a diagonal direction of the section of the aluminum profile blank.
Further, in order to better realize the invention, the inside of the aluminum profile blank is filled with a filling body.
Further, in order to better implement the invention, the filling body is sand or silica gel.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention provides a punching component for punching a three-dimensional aluminum profile, which comprises an upper punch and a lower punch, wherein the upper punch is provided with an upper cavity formed by intersecting a first wall and a second wall, the first wall and the second wall are matched with two intersecting outer side walls of the three-dimensional aluminum profile, the lower punch is provided with a lower cavity formed by intersecting a third wall and a fourth wall, the third wall and the fourth wall are matched with the other two intersecting outer side walls of the three-dimensional aluminum profile, the upper cavity and the lower cavity are spliced to form a cavity when in butt joint, the cavity is a cavity matched with the shape and the size of the three-dimensional aluminum profile, when the punching component with the structure is used, the upper punch and the lower punch are oppositely punched to enable the upper cavity and the lower cavity to be spliced to form the cavity and press an aluminum profile blank into the cavity, and the punching effect of the first wall, the second wall, the third wall and the fourth wall on the aluminum profile blank is utilized, the three-dimensional aluminum profile blank is extruded to form the three-dimensional aluminum profile, the formed three-dimensional aluminum profile is high in precision, the forming of the three-dimensional aluminum profile can be achieved only through a simple single-direction stamping process by using the stamping assembly, the production cost is lower, and the forming process of the three-dimensional aluminum profile is simplified.
(2) The die provided by the invention comprises an upper die, a lower die and the stamping assembly, wherein the upper punch is arranged on the upper die, the lower punch is arranged on the lower die, and the upper punch and the lower punch can be oppositely stamped when the upper die and the lower die are combined, so that an aluminum profile blank is stamped to form a three-dimensional aluminum profile, the three-dimensional aluminum profile can be formed by the simple die assembly, and the production cost of the three-dimensional aluminum profile is reduced.
(3) The three-dimensional aluminum profile forming method provided by the invention is applied to the die and comprises the following steps: step 1: clamping an aluminum profile blank by using a clamp; step 2: driving the upper die and the lower die to be matched so as to drive the upper punch and the lower punch to carry out opposite punching and press the aluminum profile blank into the cavity, so that the aluminum profile blank is punched to form the required three-dimensional aluminum profile; and step 3: and opening the die after the stamping is finished to obtain the formed three-dimensional aluminum profile. According to the three-dimensional aluminum profile forming method, the three-dimensional aluminum profile with accurate size can be processed through a simple stamping process, so that the three-dimensional aluminum profile is simpler to process and form, and the production cost of the three-dimensional aluminum profile is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a punch assembly of the present application;
fig. 2 is a schematic structural view of a three-dimensional aluminum profile in the present application;
FIG. 3 is a schematic drawing of a stamping process in the present application;
fig. 4 is a schematic view of the upper and lower punches in the direction of punching in the present application.
In the figure:
1-upper punch; 11-a first wall; 12-a second wall;
2-a lower punch; 21-third wall; 22-a fourth wall;
3-three-dimensional aluminum profile;
4-a first chuck;
5-a second chuck;
6-aluminum profile blank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the embodiment provides a punching assembly, which comprises an upper punch 1 and a lower punch 2, wherein the upper punch 1 and the lower punch 2 are both block-shaped structures, an upper cavity defined by a first wall 11 and a second wall 12 which are intersected is arranged on the upper punch 1, and the first wall 11 and the second wall 12 are matched with two intersected outer side walls of a three-dimensional aluminum profile 3. It is worth noting that the three-dimensional aluminium profile 3 has two end walls and four outer side walls. The lower punch 2 is provided with a lower cavity formed by intersecting a third wall 21 and a fourth wall 22, and the third wall 21 and the fourth wall 22 are matched with the other two intersected outer side walls of the three-dimensional aluminum profile 3. When the upper punch 1 and the lower punch 2 are oppositely punched, the upper cavity and the lower cavity are butted and spliced to form a cavity, and the shape and the size of the cavity are matched with those of the three-dimensional aluminum profile 3.
During the use, drive upper punch 1 and lower punch 2 and follow single direction offset, the in-process of offset then impresses aluminium alloy blank 6 in above-mentioned die cavity, with the help of first wall 11, second wall 12, third wall 21 and fourth wall 22 to the punching press effect of 6 outer walls of aluminium alloy blank, then can form required three-dimensional aluminium alloy 3 with aluminium alloy blank 6 punching press, like this, use foretell punching press subassembly, only need through simple stamping forming alright come out three-dimensional aluminium alloy 3, the production technology is simpler, the cost is lower, make the production of three-dimensional aluminium alloy 3 simpler and more convenient.
In this embodiment, the upper punch 1 and the lower punch 2 are both processed by a 3D injection molding process, specifically, three-dimensional software is used to extract an envelope surface of an outer side wall of a three-dimensional aluminum profile 3 required for envelope, then the three-dimensional software is used to divide the extracted envelope surface into a first surface group and a second surface group which are intersected with each other, finally the three-dimensional software is used to place the first surface group and the second surface group on an upper punch model and a lower punch model respectively, the first surface group includes the first wall 11 and the second wall 12, the second surface group includes the third wall 21 and the fourth wall 22, and then the 3D injection molding process is used to injection mold the upper punch model into the upper punch 1, and the lower punch model into the lower punch 2. Of course, the upper cavity of the upper punch 1 and the lower cavity of the lower punch 2 can be machined by a numerically controlled milling machine.
As a best mode of the present embodiment, in the present embodiment, the first wall 11 is a top wall of the cavity and the first wall 11 matches with the top wall of the three-dimensional aluminum profile 3; the second wall 12 is the rear side wall of the cavity and the second wall 12 is matched with the rear side wall of the three-dimensional aluminum profile 3; the third wall 21 is the bottom wall of the cavity and the third wall 21 is matched with the bottom wall of the three-dimensional aluminum profile 3; the fourth wall 22 is a front side wall of the cavity and the fourth wall 22 is matched with the front side wall of the three-dimensional aluminum profile 3. Like this, the chamber wall of going up the die cavity then corresponds three-dimensional aluminium alloy 3's roof and back lateral wall, and the chamber wall of lower die cavity then corresponds three-dimensional aluminium alloy 3's diapire and preceding lateral wall, when upper punch 1 and lower punch 2 offset, then can be more easily and accurately with the punching press of aluminium alloy blank 6 formation three-dimensional aluminium alloy 3. As another embodiment of this embodiment, the first wall 11 in this embodiment corresponds to the top wall of the three-dimensional aluminum profile 3, the second wall 12 corresponds to the front side wall of the three-dimensional aluminum profile 3, the third wall 21 corresponds to the bottom wall of the three-dimensional aluminum profile 3, and the fourth wall 22 corresponds to the rear side wall of the three-dimensional aluminum profile 3.
Example 2:
this embodiment provides a die comprising an upper die on which an upper punch 1 is mounted, a lower die on which a lower punch 2 is mounted, and the punch assembly of embodiment 1. Like this, when going up mould and lower mould compound die, then can drive upper punch 1 and 2 counterpunches of lower punch, this mould then can be through simple unidirectional stamping forming technology alright with three-dimensional aluminium alloy 3 of processing out, production technology is simpler, and the cost is lower for three-dimensional aluminium alloy 3's production is more simple and convenient. In addition, the upper punch 1 and the lower punch 2 may be mounted on the upper die and the lower die by locking pins or screws.
Example 3:
the embodiment provides a method for forming a three-dimensional aluminum profile 3, which is applied to the mold provided in embodiment 2, and the method for forming the three-dimensional aluminum profile 3 comprises the following steps:
step 1: and clamping the aluminum profile blank 6 by using a clamp. Therefore, the position of the aluminum profile blank 6 can be fixed, the deviation in the punch forming process is avoided, and the forming precision is improved. It should be noted that the aluminum profile blank 6 is a structure in the shape of a long straight tube, and as a preferred embodiment of the present embodiment, the fixture in the present embodiment includes a first chuck 4 and a second chuck 5, and the first chuck 4 and the second chuck 5 respectively clamp the left end and the right end of the aluminum profile blank 6, wherein the first chuck 4 and the second chuck 5 can be any clamping members capable of clamping the aluminum profile blank 6.
Step 2: the upper die and the lower die are driven to be assembled to drive the upper punch 1 and the lower punch 2 to carry out opposite punching, and the aluminum profile blank 6 can be pressed into the die cavity to punch the aluminum profile blank 6 in the opposite punching process, so that the aluminum profile blank 6 forms the required three-dimensional aluminum profile 3. It should be noted that the action of driving the upper die and the lower die to close the dies can be completed by a simple punch forming machine, and only the upper die and the lower die are moved in opposite directions to form the punching of the aluminum profile blank 6. Through the step, the aluminum profile blank 6 can be formed into the required three-dimensional aluminum profile 3 through a simple single-direction punch forming process, so that the three-dimensional aluminum profile 3 can be formed more simply and conveniently.
And step 3: and opening the die and taking down the formed three-dimensional aluminum profile 3 after the punching is finished, thereby obtaining the three-dimensional aluminum profile 3 with the shape and the size.
The three-dimensional aluminum profiles 3 of desired shape and size can be processed in batches by this reciprocation.
In this embodiment, the upper punch 1 and the lower punch 2 are manufactured by the method in embodiment 1. Specifically, the manufacturing method of the upper punch 1 and the lower punch 2 includes the steps of:
step S1: extracting an envelope surface enveloping the outer side wall of the three-dimensional aluminum profile 3 by using three-dimensional software, and dividing the extracted envelope surface into a first surface group and a second surface group which are intersected;
step S2: arranging the first surface group on the upper punch model by using three-dimensional software, enabling the first surface group to form an upper cavity, arranging the second surface group on the lower punch model, and enabling the second surface group to form a lower cavity;
step S3: an upper punch 1 is machined according to an upper punch model and a lower punch 2 is machined according to a lower punch model. The method of manufacturing the upper punch 1 and the lower punch 2 is 3D injection molding.
In this embodiment, as a more preferable embodiment of the present embodiment, the filler is filled in the aluminum profile blank 6, and the aluminum profile blank 6 is prevented from collapsing during the press forming process by the supporting function of the filler, so that the yield is improved. As a preferred embodiment of this embodiment, the filler in this embodiment is sand or silica gel, but the filler may be a flexible material such as rubber.
As a best mode of the present embodiment, in the present embodiment, the upper die and the lower die are matched to drive the upper punch 1 and the lower punch 2 to have the same direction of the opposite punching direction as the diagonal direction of the section of the aluminum profile blank 6, so that the matching can be realized only along a single direction, the manufacturing method of the aluminum profile blank 6 is simpler, the matching direction is easy to determine, and by the arrangement, the punching process of the three-dimensional aluminum profile 3 can be smoother, and the manufactured three-dimensional aluminum profile 3 is more qualified.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A three-dimensional aluminum profile forming method comprises a stamping assembly, wherein the stamping assembly is used for stamping and bending a three-dimensional aluminum profile, and comprises the following steps:
the upper punch is provided with an upper cavity formed by intersecting a first wall and a second wall, and the first wall and the second wall are matched with two intersected outer side walls of the three-dimensional aluminum profile; the first wall is matched with the top wall of the three-dimensional aluminum profile; the second wall is matched with the rear side wall of the three-dimensional aluminum profile;
the lower die cavity is formed by intersecting a third wall and a fourth wall, and the third wall and the fourth wall are matched with the other two intersected outer side walls of the three-dimensional aluminum profile; the third wall is matched with the bottom wall of the three-dimensional aluminum profile; the fourth wall is matched with the front side wall of the three-dimensional aluminum profile;
the upper cavity and the lower cavity are spliced to form a cavity, and the shape and the size of the cavity are matched with those of the three-dimensional aluminum profile;
comprising a mold, said mold comprising: the stamping die comprises an upper die, a lower die and the stamping assembly, wherein the upper punch is arranged on the upper die, and the lower punch is arranged on the lower die; the upper punch and the lower punch are oppositely punched so that the upper cavity and the lower cavity are spliced to form the cavity and the aluminum profile blank is pressed into the cavity, and the aluminum profile blank is extruded to form the three-dimensional aluminum profile by utilizing the punching effect of the first wall, the second wall, the third wall and the fourth wall on the aluminum profile blank; the three-dimensional aluminum profile can be formed only by a single-direction stamping process;
the molding method comprises the following steps:
step 1: clamping a straight aluminum profile blank by using a clamp;
step 2: driving the upper die and the lower die to be matched so as to drive the upper punch and the lower punch to carry out opposite punching and press the aluminum profile blank into the cavity so as to punch the aluminum profile blank; in the step 2, the opposite punching direction of the upper punch and the lower punch is the diagonal direction of the section of the aluminum profile blank;
and step 3: and opening the die after the stamping is finished to obtain the three-dimensional aluminum profile.
2. The three-dimensional aluminum profile forming method according to claim 1, characterized in that: the manufacturing method of the upper punch and the lower punch comprises the following steps:
step S1: extracting an envelope surface enveloping the outer side wall of the three-dimensional aluminum profile by using three-dimensional software, and dividing the extracted envelope surface into a first surface group and a second surface group which are intersected;
step S2: arranging the first face groups on an upper punch model by using three-dimensional software, enabling the first face groups to surround the upper cavity, and arranging the second face groups on a lower punch model, enabling the second face groups to surround the lower cavity;
step S3: the upper punch is machined according to the upper punch pattern and the lower punch is machined according to the lower punch pattern.
3. The three-dimensional aluminum profile forming method according to claim 2, characterized in that: the method for processing the upper punch and the lower punch in the step S3 is 3D injection molding.
4. The three-dimensional aluminum profile forming method according to claim 1, characterized in that: the clamp comprises a first clamp and a second clamp, and the first clamp and the second clamp respectively clamp the left end and the right end of the aluminum profile blank.
5. The three-dimensional aluminum profile forming method according to claim 1, characterized in that: the aluminum profile blank is filled with a filling body.
6. The three-dimensional aluminum profile forming method according to claim 5, characterized in that: the filler is sand or silica gel.
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| CN202011086290.8A CN112517706B (en) | 2020-10-12 | 2020-10-12 | Stamping assembly, die and three-dimensional aluminum profile forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011086290.8A CN112517706B (en) | 2020-10-12 | 2020-10-12 | Stamping assembly, die and three-dimensional aluminum profile forming method |
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| CN112517706A CN112517706A (en) | 2021-03-19 |
| CN112517706B true CN112517706B (en) | 2022-04-26 |
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| US5170557A (en) * | 1991-05-01 | 1992-12-15 | Benteler Industries, Inc. | Method of forming a double wall, air gap exhaust duct component |
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| CN104647697A (en) * | 2015-01-27 | 2015-05-27 | 苏州汇众模塑有限公司 | Digital design technology for injection mold |
| CN108311578A (en) * | 2018-05-08 | 2018-07-24 | 长春工业大学 | A kind of tension and compression convolution section flexible three-dimensional bending forming technology and device |
| CN210188133U (en) * | 2019-06-24 | 2020-03-27 | 广西艾盛创制科技有限公司 | Bending die for hyperboloid aluminum alloy section |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5170557A (en) * | 1991-05-01 | 1992-12-15 | Benteler Industries, Inc. | Method of forming a double wall, air gap exhaust duct component |
| CN1970185A (en) * | 2006-12-05 | 2007-05-30 | 成都飞机工业（集团）有限责任公司 | Bending and shaping method for hollow aluminum alloy extrusion section bar |
| CN101927291A (en) * | 2009-06-22 | 2010-12-29 | 宝山钢铁股份有限公司 | Pre-forming method for tube hydroforming and device thereof |
| CN104647697A (en) * | 2015-01-27 | 2015-05-27 | 苏州汇众模塑有限公司 | Digital design technology for injection mold |
| CN108311578A (en) * | 2018-05-08 | 2018-07-24 | 长春工业大学 | A kind of tension and compression convolution section flexible three-dimensional bending forming technology and device |
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